GAI-Tronics ICP9000 Navigator Series Console Operator's Manual - Manual (Page 27)

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Standard Feature Operation
Selected and Unselected Channels
At any given time, a single channel is designated as the selected channel. Many of the console’s features
such as paging, signaling, monitor, alert tone, intercom and the main
TRANSMIT button operate on the
selected channel. Refer to the status line or top line of the information window located in the center of
the desktop for information concerning the selected channel. This information includes the channel’s
alias as defined by CARD Suite, channel state, transmit, receive, monitor, intercom, supervisor, and other
optional information configured using CARD Suite, such as PL setting and secure state of the channel.
Refer to the Definitions and Acronyms section on page 69 for definitions. If a channel is not selected, it
is considered unselected. The selected channel’s audio is directed to the select speaker (left channel) and
summed audio from all other unselected channels is directed to the unselect speaker (right channel).
In some modes of operation, the SELECT indicator flashes on the selected channel while the SELECT
indicator of another channel or other channels is lit steadily. Whenever a SELECT indicator is flashing,
it indicates that the console is in a mode of operation where the selected channel is not included. In some
of these cases, the selected channel audio is routed to the unselect speaker while the audio of the
channel(s) included in the current mode of operations is/are routed to the select speaker. While
becoming familiar with the different modes of operation, the operator should note when the
SELECT
indicator is flashing and take time to understand the behavior of the console when this occurs.
The ROLL UP Button
The ROLL UP button allows channels that are not being used to be “rolled-up” so that only the SELECT
button of the channel is visible. This may be useful if the channel is needed rarely. To roll up a channel,
first press the
ROLL UP button and then roll up the desired channels by pressing their SELECT button.
The channel can be unrolled in two ways. Activate the roll-up feature by pressing the ROLL UP button
and then selecting the desired rolled up channels to be unrolled. A quicker method to unroll a channel is
to simply press the
SELECT button while in normal operation.
Setting the Speaker Level
To the side of the information window are two sliders that adjust the master volume of the select and
unselect speakers. The operator should adjust the level of each speaker so that select and unselect audio
can be discerned from each other. Passing the pointer over either slider provides a pop-up indicating the
current volume setting of the slider.